Initial commit

libs/smart_ptr/test/shared_from_raw_test2.cpp

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+//
+//  shared_from_raw_test2.cpp - based on esft_regtest.cpp
+//
+//  Copyright (c) 2008, 2014 Peter Dimov
+//
+//  Distributed under the Boost Software License, Version 1.0.
+//
+//  See accompanying file LICENSE_1_0.txt or copy at
+//  http://www.boost.org/LICENSE_1_0.txt
+//
+
+#include <boost/smart_ptr/enable_shared_from_raw.hpp>
+#include <boost/shared_ptr.hpp>
+#include <boost/weak_ptr.hpp>
+#include <boost/detail/lightweight_test.hpp>
+#include <memory>
+#include <string>
+
+class X: public boost::enable_shared_from_raw
+{
+private:
+
+    int destroyed_;
+    int deleted_;
+    int expected_;
+
+private:
+
+    X( X const& );
+    X& operator=( X const& );
+
+public:
+
+    static int instances;
+
+public:
+
+    explicit X( int expected ): destroyed_( 0 ), deleted_( 0 ), expected_( expected )
+    {
+        ++instances;
+    }
+
+    ~X()
+    {
+        BOOST_TEST( deleted_ == expected_ );
+        BOOST_TEST( destroyed_ == 0 );
+        ++destroyed_;
+        --instances;
+    }
+
+    typedef void (*deleter_type)( X* );
+
+    static void deleter( X * px )
+    {
+        ++px->deleted_;
+    }
+
+    static void deleter2( X * px )
+    {
+        ++px->deleted_;
+        delete px;
+    }
+};
+
+int X::instances = 0;
+
+void test()
+{
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 0 );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        std::auto_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 0 ) );
+        BOOST_TEST( X::instances == 1 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        X x( 1 );
+        boost::shared_ptr<X> px( &x, X::deleter );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+
+    {
+        boost::shared_ptr<X> px( new X( 1 ), X::deleter2 );
+        BOOST_TEST( X::instances == 1 );
+
+        X::deleter_type * pd = boost::get_deleter<X::deleter_type>( px );
+        BOOST_TEST( pd != 0 && *pd == X::deleter2 );
+
+        boost::weak_ptr<X> wp( px );
+        BOOST_TEST( !wp.expired() );
+
+        px.reset();
+
+        BOOST_TEST( wp.expired() );
+    }
+
+    BOOST_TEST( X::instances == 0 );
+}
+
+struct V: public boost::enable_shared_from_raw
+{
+    virtual ~V() {}
+    std::string m_;
+};
+
+struct V2
+{
+    virtual ~V2() {}
+    std::string m2_;
+};
+
+struct W: V2, V
+{
+};
+
+void test2()
+{
+    boost::shared_ptr<W> p( new W );
+}
+
+void test3()
+{
+    V * p = new W;
+    boost::shared_ptr<void> pv( p );
+    BOOST_TEST( pv.get() == p );
+    BOOST_TEST( pv.use_count() == 1 );
+}
+
+struct null_deleter
+{
+    void operator()( void const* ) const {}
+};
+
+void test4()
+{
+    boost::shared_ptr<V> pv( new V );
+    boost::shared_ptr<V> pv2( pv.get(), null_deleter() );
+    BOOST_TEST( pv2.get() == pv.get() );
+    BOOST_TEST( pv2.use_count() == 1 );
+}
+
+void test5()
+{
+    V v;
+
+    boost::shared_ptr<V> p1( &v, null_deleter() );
+    BOOST_TEST( p1.get() == &v );
+    BOOST_TEST( p1.use_count() == 1 );
+
+    try
+    {
+        boost::shared_from_raw( p1.get() );
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "shared_from_raw( p1.get() ) failed" );
+    }
+
+    p1.reset();
+
+    boost::shared_ptr<V> p2( &v, null_deleter() );
+    BOOST_TEST( p2.get() == &v );
+    BOOST_TEST( p2.use_count() == 1 );
+
+    try
+    {
+        boost::shared_from_raw( p2.get() );
+    }
+    catch( ... )
+    {
+        BOOST_ERROR( "shared_from_raw( p2.get() ) failed" );
+    }
+}
+
+int main()
+{
+    test();
+    test2();
+    test3();
+    test4();
+    test5();
+
+    return boost::report_errors();
+}